MESON Chess Problem Database
Problem Display
PID: 54107 (4nR2/4r3/bR6/4kPp1/K2N2r1/BB1PP1p1/3bN1Q1/7q w - - 0 1)
Ellerman, Arnoldo
Chess, 1943
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Qd5#
- 1...Qb1
- 2.Qd5#
- 1...Qc1
- 2.Qd5#
- 1...Qd1
- 2.Qd5#
- 1...Qe1
- 2.Qd5#
- 1...Qf1
- 2.Qd5#
- 1...Qg1
- 2.Qd5#
- 1...Qh2
- 2.Qd5#
- 1...Qh3
- 2.Qd5#
- 1...Qh4
- 2.Qd5#
- 1...Qh5
- 2.Qd5#
- 1...Qh6
- 2.Qd5#
- 1...Qh7
- 2.Qd5#
- 1...Qh8
- 2.Qd5#
- 1...Rxd4+
- 2.exd4#
- 1...Re6
- 2.Rxe6#
- 1...Ra7
- 2.Re6#
- 1...Rb7
- 2.Re6#
- 1...Rc7
- 2.Re6#
- 1...Rd7
- 2.Re6#
- 1...Rf7
- 2.Re6#
- 1...Rg7
- 2.Re6#
- 1...Rh7
- 2.Re6#
- 1...Bb4
- 2.Sf3#
- 1...Bc4
- 2.Sc6#
- 1...Bb5+
- 2.Rxb5#
- 1...Bc8
- 2.Rb5#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...Sg7
- 2.Bd6#
- 1...Qa1
- Tries
- 1.Bxe7?
- threat
- 2.Re6#
- 1...Rxd4+
- 2.exd4#
- 1...Bb5+
- 2.Rxb5#
- 1...Qh6
- 2.Qd5#
- 1...Bc4
- 2.Sc6#
- 1...Bc8
- 2.Rb5#
- 1...Sd6
- 2.Bxd6#
- 2.Bf6#
- 1...Sc7
- 2.Bd6#
- 2.Bf6#
- 1...Sg7
- 2.Bd6#
- 2.Bf6#
- 1...Qa1+!
- threat
- 1.e4?
- threat
- 2.Sf3#
- 2.Sc6#
- 1...Bb5+
- 2.Rxb5#
- 1...Qxg2
- 2.Sc6#
- 1...Bxd3
- 2.Sc6#
- 1...Qc1
- 2.Sf3#
- 1...Qf1
- 2.Sc6#
- 1...Qh6
- 2.Sf3#
- 1...Rf4
- 2.Sc6#
- 1...Re6
- 2.Sf3#
- 2.Rxe6#
- 1...Rc7
- 2.Sf3#
- 2.Re6#
- 1...Rf7
- 2.Sf3#
- 2.Re6#
- 1...Bb4
- 2.Sf3#
- 1...Bb7
- 2.Sf3#
- 1...Rxe4!
- threat
- 1.Bxe7?
- Keys
- 1.Rf7!
- threat
- 2.Rxe7#
- 1...Rxd4+
- 2.exd4#
- 1...Bb5+
- 2.Rxb5#
- 1...Rxf7
- 2.Re6#
- 1...Qh6
- 2.Qd5#
- 1...Qh7
- 2.Qd5#
- 1...Re6
- 2.Rxe6#
- 1...Ra7
- 2.Re6#
- 1...Rb7
- 2.Re6#
- 1...Rc7
- 2.Re6#
- 1...Rd7
- 2.Re6#
- 1...Bb4
- 2.Sf3#
- 1...Bc4
- 2.Sc6#
- 1...Bc8
- 2.Rb5#
- 1...Sd6
- 2.Bxd6#
- 1...Sc7
- 2.Bd6#
- 1...Sg7
- 2.Bd6#
- threat
- 1.Rf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 15
- Sets
- Q(a);N_GUARD,P_PINB(C)::QAR1(B)
- Q(a);N_GUARD::QAR1(B)
- Q(a);N_GUARD,P_PINB(D)::QAR1(B)
- R(d);CHECK,OGATE,XS(H)::P(F),XR(d)
- R(h);N_GUARD::R1(J),XR(h)
- R(h);N_GUARD::R1(J)
- B(b);N_PINS(H)::S(H)
- B(g);N_PINS(H)::S(H)
- B(g);CHECK,N_GUARD::R(J),XB(g)
- B(g);N_GUARD::R(J)
- S(i);N_GUARD::B(C),XS(i)
- S(i);N_GUARD::B(C)
- Tries
- Try
- B(C);XR(h)
- Threat
- R1(J)
- Vars
- R(d);CHECK,OGATE,XS(H)::P(F),XR(d)
- B(g);CHECK,N_GUARD::R(J),XB(g)
- Q(a);N_GUARD::QAR1(B)
- B(g);N_PINS(H)::S(H)
- B(g);N_GUARD::R(J)
- Refutation
- Q(a);CHECK
- Try
- P(F);N_SPINS(H)
- Threat
- DUALS(2)
- Vars
- B(g);CHECK,N_GUARD::R(J),XB(g)
- Q(a);XQ(B)::S(H)
- B(g);XP(E)::S(H)
- Q(a);::S(H)
- R(d);::S(H)
- B(b);::S(H)
- B(g);::S(H)
- Refutation
- R(d);P_PINS(H),XP(F)
- Try
- Actual
- R(K);
- Threat
- R(K),XR(h)
- Vars
- R(d);CHECK,OGATE,XS(H)::P(F),XR(d)
- B(g);CHECK,N_GUARD::R(J),XB(g)
- R(h);N_GUARD,XR(K)::R1(J)
- Q(a);N_GUARD::QAR1(B)
- R(h);N_GUARD::R1(J),XR(h)
- R(h);N_GUARD::R1(J)
- B(b);N_PINS(H)::S(H)
- B(g);N_PINS(H)::S(H)
- B(g);N_GUARD::R(J)
- S(i);N_GUARD::B(C),XS(i)
- S(i);N_GUARD::B(C)
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